Abstract

It is well known that the results of yarn evenness test informed the quality of the resulting fabric. The unevenness such as thin, thick, nep, and mass periodic change caused bad visual quality of fabric. Evener yarn makes better visual quality fabric. In our previous paper, it was, however, reported that the double ply yarn having little unevenness caused a peculiar manner of bad visual quality of the plain stitch fabric. But, in yarn friction test, this yarn had the wider range of the friction change working between needles and the running yarn than usual yarns. In addition, the friction change had a certain cyclic variation. In case of flat knitting machine, dyeing double ply yarns are generally knitted. After dyeing, evenness test and friction test are seldom applied to the yarn. In this paper, these tests were carried out for the several yarns which were generally knitted by flat knitting machine. Some yarns were added as tested yarns. Those yarns imitated the yarn that caused a peculiar manner of bad visual quality. The result of these examination and measurement was weighed. It was found that there was the correlation between the variety of friction and visual quality of the resulting fabric.

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